Water-heater



NITED STATES PATENT FFIcE.

FRANK E. PEOK, OF CLEVELAND, OHIO.

WATER-HEATER.

SPECIFICATION forming part of Letters Patent No. 507,633, dated October31, 1893.

Application filed December 24, 1892. Serial No. 4.56394- (No model.)

To all whom it may concern.-

Beit known that I, FRANK E. PEoK,a citizen of the United States, and aresident of lmprovementsin Water-Heaters, of which the following is aspecification.

This invention relates to thermostats for water-heaters, and has for itsobject to simplify and reduce the cost of constructing and maintainingsuch devices. 7

The invention consists in the simple constructions and combinations ashereinafter described and pointed out in the claim.

In the accompanying drawingsFigure 1 is a longitudinal section of my newwater heater. Fig. 2 is a crosssection of the same.

A represents a cylindrical body, having its ends closed by heads B, B,fastened on by bolts or other suitable means. This body or casing may beof suitable size and capacity to fulfill needed requirements, and issupported in a horizontal position resting on suitable legsor base. Inthe bottom or lower side is provided a cold water inlet I and in thetop, a hot water outlet 0, near the front end of the cylinder. 0represents a coil of steam pipe, supported inahorizontal position in thecentral part of the said cylinder, the top coil of which has a steaminlet, S, in one head B, and the lower coil has a steam outlet 8*, in.the same head. V is abalanced valve connected with the steam inlet S.The body of said cylinder is divided horizontally by a partition E,above said coils and extends from the front head B, to within a shortdistance of the rear head B, the purpose of which is to cause the waterto flow from the inlet, I, along and among the steam coils, for heatingit, around the farther end of said partition, as indicated by the arrow,before it can reach the outlet, 0.

D is a pipe made of brass or other metal susceptible of quick expansionand contraction, by change of temperature. Its forward end is firmlysecured in the neck of a yoke Y, fixed in the head B, and within saidpipe B is provided a steel rod R, having its rear end secured to a capd, which closes .the rear end of said tube, D, said pipe and rodextending to within a short distance of the rear head of the cylinder.The forward end of the rod R protrudes through the neck of said yoke Y,and is employed for operatingaleverattachment connected to said yoke forcontrolling the aforesaid steam inlet valve. The valve stem of saidvalve is supported in an arm or bracket W, attached to the valve body.To the lower short arm of said yokeYis pivoted a short lever L, and toupper long arm of the yoke is pivotally connected a depending lever N,the lower end of which is connected with the valve stem. The upper endof lever L is connected to the lever N near its pivoted end, by a link Mhaving several bolt-holes m to permit of adjustment in the length of thelink; and the protruding end of rod R bears against the lever L, nearits pivotal end.

T is a spring attached to the yoke and the lever N designed for drawingon the lever, when pressure by the rod R is withdrawn.

From the foregoing it will be seen that the working of this device issimply as follows:

As the water becomes heated the tubeD will expand and thereby withdrawthe rod R and release itsv push on lever L, and allow the spring to actupon leverN and close the valve, shutting off the ingress of steam. Whenthe water becomes cooled, by withdrawing hot water or otherwise, thetube again contracts, causing the rod R to again push on lever L andthus through the medium of said levers, open the valve and admit moresteam. The lovers are so constructed and arranged that a slight movementof the rod is several times multiplied in the lever N, so that a few degrees variation in the temperature in the pipe D serves to'operate thevalve. It is therefore very sensitive and quick to act.

Having described my invention, 1 claim- In a device of the characterdescribed, the combination with a horizontal cylinder, steam circulatingpipes therein, a horizontal partition above said pipes extending fromthe front head of the cylinder nearly to the rear head, and cold waterinlet and .outlet pipes near said front head, and in the bottom and topof the cylinder respectively; of a yoke inserted in the front head, aclosed expansible tube rigidly secured to and closed at one end by thestem of said yoke, extending above said bolt-holes whereby it is adjustably bolted to partition and beyond its inner end, and out thedepending lever near the pivot of the latof contact with all surroundingparts, a cap closing the inner end of said tube, a rod leading from saidcap at the inner end of the tube loosely through the stem of the yokeand having a smaller coefficient of expansion than the surrounding tube,a lever pivoted in one arm of the yoke and against which said rod bears,a depending lever pivoted in the other arm of the yoke, a link pivotedto the free end of the first lever and having anuinberof ter, a springmoving the levers in the direction of the expansion of said tube, avalve in the steam supply pipe, and connections between the lower end ofsaid depending lever and valve as and for the purpose set forth.

FRANK E. PEOK.

\Vitnesses: GEO. W. TIBBrrTs, E. J. PINNEY.

